CN105543838A - Remanufacturing method for marine crankshaft - Google Patents
Remanufacturing method for marine crankshaft Download PDFInfo
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- CN105543838A CN105543838A CN201511000392.2A CN201511000392A CN105543838A CN 105543838 A CN105543838 A CN 105543838A CN 201511000392 A CN201511000392 A CN 201511000392A CN 105543838 A CN105543838 A CN 105543838A
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- bent axle
- crankshaft
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a remanufacturing method for a marine crankshaft. The remanufacturing method mainly comprises the steps that a fatigue wear position is determined, the fatigue wear dimension of the crankshaft is measured, and then a fatigue layer is removed; nondestructive examination is conducted, and it is guaranteed that no surface defect or internal defect exists in the crankshaft to be fused; alloy powder which is prepared in proportion is sufficiently mixed through a mechanical mixing method; a semiconductor optical fiber laser device is used for scanning, a pneumatic coaxial powder feeding method is adopted, the alloy powder is fused in the worn position of the marine crankshaft, low-temperature nitrogen is introduced into a cooling molten pool, ultrafine cladding layer alloy structures are obtained, and the fatigue wear resistance of the crankshaft is improved; wear processing is conducted on the fused marine crankshaft; and dimension detection, shape detection, dynamic balance detection, accuracy detection and surface quality detection are conducted, and the remanufactured marine crankshaft meeting standard requirements is obtained. According to the remanufacturing method, the technique is simple, the controllability is high, deformation is avoided, energy consumption is small, and remanufacturing of the worn marine crankshaft is achieved; in addition, the remanufactured marine crankshaft is excellent in performance and longer in service life.
Description
Technical field the present invention relates to a kind of restorative procedure of part, particularly a kind of restorative procedure of bent axle.
Background technology crank axle for vessel is the core component of marine diesel, has the title of the propulsion source of ship's fitting and " heart " of marine diesel.Crank axle for vessel is made up of free end axle journal, output terminal axle journal, intermediate spindle neck and crank throw etc., has quality weight, enormous size, complex-shaped, cost is high, poor rigidity and accuracy requirement pole high, belongs to typical extremely manufacturing category.Bent axle, in working process of diesel engine, bears the gas force in cylinder, the periodically variable load that moving-mass mass force (comprising to-and-fro movement and turning motion) causes, and also wants output torque simultaneously.Therefore bent axle is the component that diesel engines load is the most complicated.Periodically repeated load can make crankshaft system produce resonance in diesel engine operating rotational speed range, occurs torsional fatigue failure too early, occurs fatigue wear and crackle and causes noise and power dropping, even occur the serious accidents such as crankshaft breakdown at axle journal place.
For the Important Problems that the manufacturing issue again after crank axle for vessel fatigue damage is scientific research institutions and manufacturing enterprise's concern all the time, after how realizing fatigue wear, bent axle manufactures again, for the international competitiveness strengthening China's shipbuilding and Ship-repairing Industry, particularly save valuable alloy resource, with reduction energy consumption, there is important theory significance and practical value.
For the manufacturing issue more how realizing bent axle after fatigue wear, the research work carried out both at home and abroad mainly concentrates on and adopts the technique such as brush plating, plating, because bent axle is to thermo-responsive, the conventional method such as argon arc welding, plasma surfacing due to heat output large, bent axle is easily caused to occur thermal distortion and scrap, so cannot adopt.But adopt the technique such as brush plating, plating to manufacture bent axle again, there is following problem: brushing coating, be mechanical bond between electrolytic coating and bent axle matrix, bonding strength is low, cannot be used for heavy duty, impact and high speed situation, narrow application range; And brushing coating, electrolytic coating are thin, for abrasion loss comparatively large crankshaft cannot complete and manufacture again.
Summary of the invention the object of the present invention is to provide that a kind of technique is simple, controllability is strong, the scope of application is wide, energy consumption is few, cost is low, the reproducing method of pollution-free, efficient crank axle for vessel.
Technical scheme of the present invention is as follows:
(1) carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detects size, determines crankshaft wear position and abrasion loss thereof, according to detected result, removes the chafing fatigue layer of bent axle;
(2) adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that bent axle is without surface and subsurface defect;
(3) powdered alloy prepared in proportion is put into mechanical type meal mixer to mix;
(4) bent axle is fixed on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting laser device melting and coating process parameter, pneumatic coaxial powder-feeding method is adopted to carry out laser melting coating to surface to be repaired, powder feed rate is 50 ~ 150g/min, crankshaft wear portion faces cladding 1 ~ 3 layer, alloy cladding layer thickness reaches 0.5 ~ 2.5mm;
(5) at 5 ~ 8mm place, laser molten pool rear portion fixed nitrogen tracheae, pass into low temperature nitrogen to the molten bath in cooling and realize cooling fast, nitrogen tube follows laser molten pool motion;
(6) require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies;
(7) surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensure that the size of bent axle, shape, precision and surface quality all meet the demands.
Described semiconductor light fibre laser melting and coating process parameter is: power P=500 ~ 1750W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=300 ~ 1200mm/min;
Described nitrogen tube diameter is 3mm, is fixed on the laser head of semiconductor light fibre laser, and nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 5 ~ 10L/min;
Described powdered alloy granularity is 140 ~ 320 orders, and the mass percent of each composition is: C0.11 ~ 0.12%, Cr16 ~ 17%, Ni4 ~ 5%, Mo1.5 ~ 1.7%, and surplus is Fe;
Preferably the powdered alloy prepared in proportion is put into mechanical type meal mixer mixing 1 ~ 2 hour;
Preferably remove the chafing fatigue layer 0.3 ~ 2mm of crank axle for vessel, there is new machined surface.
The present invention compared with prior art tool has the following advantages:
1, technique is simple, and controllability is strong, and the scope of application is wide, and cost is low, is applicable to scale operation;
2, the bent axle after manufacturing again, without thermal distortion, is metallurgical binding between cladding alloy layer and matrix, and bonding strength is large, and 0.5mm ~ 2.5mm is optional for cladding layer thickness;
3, semiconductor optical fibre laser melting and coating process has instantaneously heating feature, and molten bath central point temperature reaches more than 10000 °, simultaneously because molten bath is only 2mm, under the cooling effect of normal temperature base material around, condensate depression is large, obtains fine grained texture, has excellent mechanical property;
4, after cladding, obtain the alloy layer that performance is better than bent axle basic material, there is excellent antifatigue polishing machine;
5, improve cladding alloy layer fatigue performance, microstructure of surface cladding layer grain fineness number is reduced to 2 ~ 3um by 5 original ~ 8um, and microhardness improves more than 35%, significantly improves antifatigue polishing machine.
6, the bent axle life-span after manufacturing again compares brand-new bent axle and improves more than 2 times, and comparatively the traditional technology production efficiency such as brush plating improves more than 3 times, has outstanding economic benefit and social benefit
Embodiment
Embodiment 1
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 0.2mm, according to detected result, removes the chafing fatigue layer 0.3mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.11%, Cr16%, Ni4%, Mo1.5%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 1 hour; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=500W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=1200mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 50g/min, and crankshaft wear portion faces cladding 1 layer, alloy cladding layer thickness reaches 0.5mm; In 5mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 5L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Embodiment 2
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 1.8mm, according to detected result, removes the chafing fatigue layer 2mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.12%, Cr17%, Ni5%, Mo1.7%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 2 hours; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=1750W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=300mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 150g/min, and crankshaft wear portion faces cladding 3 layers, alloy cladding layer thickness reaches 2.5mm; In 8mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 10L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Embodiment 3
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 1mm, according to detected result, removes the chafing fatigue layer 1.5mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.11%, Cr16%, Ni5%, Mo1.6%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 1.5 hours; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=1000W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=640mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 80g/min, and crankshaft wear portion faces cladding 3 layers, alloy cladding layer thickness reaches 1.8mm; In 8mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 6L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Embodiment 4
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 0.5mm, according to detected result, removes the chafing fatigue layer 0.8mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.11%, Cr16%, Ni4%, Mo1.5%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 1 hour; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=750W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=420mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 70g/min, and crankshaft wear portion faces cladding 2 layers, alloy cladding layer thickness reaches 1mm; In 8mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 5L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Embodiment 5
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 0.3mm, according to detected result, removes the chafing fatigue layer 0.5mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.12%, Cr16.5%, Ni4.5%, Mo1.7%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 2 hours; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=1250W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=1000mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 90g/min, and crankshaft wear portion faces cladding 2 layers, alloy cladding layer thickness reaches 0.8mm; In 5mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 7L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Embodiment 6
First carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detect size, determine crankshaft wear position and abrasion loss thereof, uneven wear amount reaches 0.1mm, according to detected result, removes the chafing fatigue layer 0.3mm of bent axle; Again magnetic-particle inspection and UT (Ultrasonic Testing) are adopted to the bent axle removing fatigue wear layer, guarantee that bent axle is without surface and subsurface defect; Preparing granularity is 140 ~ 320 orders, and each Ingredient percent is: C0.12%, Cr17%, Ni4%, Mo1.5%, and surplus is the powdered alloy of Fe; The powdered alloy prepared is put into mechanical type meal mixer mixing 2 hours; Be fixed on by bent axle on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting melting and coating process parameter is: power P=800W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=500mm/min; Adopt pneumatic coaxial powder-feeding method to carry out laser melting coating to surface to be repaired, powder feed rate is 55g/min, and crankshaft wear portion faces cladding 1 layer, alloy cladding layer thickness reaches 0.5mm; In 5 ~ 8mm place, laser molten pool rear portion fixed diameter 3mm nitrogen tube, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 6L/min, realizes molten bath and cools fast, and nitrogen tube follows laser molten pool motion; Require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensures that the size of bent axle, shape, precision and surface quality all meet the demands; Finished parts is after the assay was approved coated with slushing oil, finally packs.
Claims (6)
1. a reproducing method for crank axle for vessel, is characterized in that:
(1) carry out disintegration dismounting to crank axle for vessel parts, cleaning, mark is known, and detects size, determines crankshaft wear position and abrasion loss thereof; According to detected result, remove the chafing fatigue layer of bent axle;
(2) adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that bent axle is without surface and subsurface defect;
(3) powdered alloy prepared in proportion is put into mechanical type meal mixer to mix;
(4) bent axle is fixed on five axle laser process machines, adopt semiconductor optical fibre laser scans, setting laser device melting and coating process parameter, pneumatic coaxial powder-feeding method is adopted to carry out laser melting coating to surface to be repaired, powder feed rate is 50 ~ 150g/min, crankshaft wear portion faces cladding 1 ~ 3 layer, alloy cladding layer thickness reaches 0.5 ~ 2.5mm;
(5) at 5 ~ 8mm place, laser molten pool rear portion fixed nitrogen tracheae, pass into low temperature nitrogen to the molten bath in cooling and realize cooling fast, nitrogen tube follows laser molten pool motion;
(6) require to carry out ground finish to the bent axle after laser melting coating according to drawing and relevant technologies;
(7) surface colour flaw detection and transient equilibrium are carried out to the bent axle after processing, ensure that the size of bent axle, shape, precision and surface quality all meet the demands.
2. the reproducing method of crank axle for vessel according to claim 1, is characterized in that: the chafing fatigue layer 0.3 ~ 2mm removing crank axle for vessel, there is new machined surface.
3. the reproducing method of crank axle for vessel according to claim 1, is characterized in that: described semiconductor light fibre laser melting and coating process parameter is: power P=500 ~ 1750W, circle spot diameter 2mm, overlapping rate 25%, scan velocity V=300 ~ 1200mm/min.
4. the reproducing method of crank axle for vessel according to claim 1, it is characterized in that: described nitrogen tube diameter 3mm, is fixed on the laser head of semiconductor light fibre laser, nitrogen tube is perpendicular to bent axle surface, and distance treats cladding surface 5mm, and the nitrogen flow passed into is 5 ~ 10L/min.
5. the reproducing method of the crank axle for vessel according to claim 1 or 3, is characterized in that: described powdered alloy granularity is 140 ~ 320 orders, and the mass percent of each composition is: C0.11 ~ 0.12%, Cr16 ~ 17%, Ni4 ~ 5%, Mo1.5 ~ 1.7%, surplus is Fe.
6. the reproducing method of crank axle for vessel according to claim 5, is characterized in that: the powdered alloy prepared in proportion is put into mechanical type meal mixer mixing 1 ~ 2 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511000392.2A CN105543838A (en) | 2015-12-25 | 2015-12-25 | Remanufacturing method for marine crankshaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511000392.2A CN105543838A (en) | 2015-12-25 | 2015-12-25 | Remanufacturing method for marine crankshaft |
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| CN105543838A true CN105543838A (en) | 2016-05-04 |
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| CN201511000392.2A Pending CN105543838A (en) | 2015-12-25 | 2015-12-25 | Remanufacturing method for marine crankshaft |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034461A (en) * | 2017-04-14 | 2017-08-11 | 衢州学院 | The technique and its complete set of equipments repaired for roll shaft journal wear |
| CN110082113A (en) * | 2019-04-03 | 2019-08-02 | 陕西渭阳动力技术服务有限责任公司 | A kind of monitoring method remanufacturing diesel engine |
| CN110732800A (en) * | 2019-10-25 | 2020-01-31 | 神华神东煤炭集团有限责任公司 | Iron-based alloy composition for repairing middle tank and repairing method of middle tank |
| CN112981390A (en) * | 2019-12-14 | 2021-06-18 | 丹阳宏图激光科技有限公司 | Laser repairing method for rotary drum of PTA refining pressure filter |
| CN112981389A (en) * | 2019-12-14 | 2021-06-18 | 丹阳宏图激光科技有限公司 | Laser repair method for propeller shaft |
| CN113913807A (en) * | 2020-07-10 | 2022-01-11 | 丹阳宏图激光科技有限公司 | Laser repairing method for CTA (CTA) pressure filter drum |
| CN113913808A (en) * | 2020-07-10 | 2022-01-11 | 丹阳宏图激光科技有限公司 | Laser repairing method for marine diesel engine crankshaft |
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| CN1341156A (en) * | 1999-02-19 | 2002-03-20 | 大众汽车有限公司 | Method and system for producing wear-resistant surfaces |
| CN101109083A (en) * | 2007-08-20 | 2008-01-23 | 沈阳大陆激光成套设备有限公司 | Laser cladding repair technique for engine crankshaft |
| CN104087789A (en) * | 2014-07-28 | 2014-10-08 | 苏州大学 | Self-lubricating wear-resistant composite coating for titanium alloy surface and preparation method of self-lubricating wear-resistant composite coating |
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| CN1341156A (en) * | 1999-02-19 | 2002-03-20 | 大众汽车有限公司 | Method and system for producing wear-resistant surfaces |
| CN101109083A (en) * | 2007-08-20 | 2008-01-23 | 沈阳大陆激光成套设备有限公司 | Laser cladding repair technique for engine crankshaft |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034461A (en) * | 2017-04-14 | 2017-08-11 | 衢州学院 | The technique and its complete set of equipments repaired for roll shaft journal wear |
| CN110082113A (en) * | 2019-04-03 | 2019-08-02 | 陕西渭阳动力技术服务有限责任公司 | A kind of monitoring method remanufacturing diesel engine |
| CN110732800A (en) * | 2019-10-25 | 2020-01-31 | 神华神东煤炭集团有限责任公司 | Iron-based alloy composition for repairing middle tank and repairing method of middle tank |
| CN110732800B (en) * | 2019-10-25 | 2021-09-03 | 神华神东煤炭集团有限责任公司 | Iron-based alloy composition for repairing middle tank and repairing method of middle tank |
| CN112981390A (en) * | 2019-12-14 | 2021-06-18 | 丹阳宏图激光科技有限公司 | Laser repairing method for rotary drum of PTA refining pressure filter |
| CN112981389A (en) * | 2019-12-14 | 2021-06-18 | 丹阳宏图激光科技有限公司 | Laser repair method for propeller shaft |
| CN113913807A (en) * | 2020-07-10 | 2022-01-11 | 丹阳宏图激光科技有限公司 | Laser repairing method for CTA (CTA) pressure filter drum |
| CN113913808A (en) * | 2020-07-10 | 2022-01-11 | 丹阳宏图激光科技有限公司 | Laser repairing method for marine diesel engine crankshaft |
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Application publication date: 20160504 |
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